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Effects of HPA-Nonlinearity on a 4-DPSK/OFDM-Signal for a Digital Sound Broadcasting System.

Rapp, Ch. (1991) Effects of HPA-Nonlinearity on a 4-DPSK/OFDM-Signal for a Digital Sound Broadcasting System. In: Proceedings Second European Conf. on Sat. Comm. (ESA SP-332), pp. 179-184. Second European Conf. on Sat. Comm., 22. - 24.10.91, Liege, Belgium., Liege, Belgium.

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Abstract

Orthogonal Frequency Division Multiplexing (OFDM) in conjunction with a 4-DPSK modulation format has been proposed for the future digital audio broadcasting system (DAB), that should provide compact disk sound quality in portable, vehicular and fixed receivers. With properly chosen parameters, this system should be appropriate for both terrestrial and satellite transmission. In this paper the influence of the nonlinear distortions introduced by the high power amplifier (HPA) of the transmitter is examined. In particular, the degradation in power efficiency due to intermodulation effects and backoff operating, as well as spectral degradations are investigated.It is shown for three different kinds of limiting amplifier models, that even with an output backoff (OBO) in the region of 5-6 dB, the degradation of, e.g., a 512-carrier 4-DPSK/OFDM system relative to the linear case is below 1.7 dB, while the regenerated sidelobes of the transmitted spectrum are kept below -20 dB.

Item URL in elib:https://elib.dlr.de/33776/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1991, pages=6,
Title:Effects of HPA-Nonlinearity on a 4-DPSK/OFDM-Signal for a Digital Sound Broadcasting System.
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Rapp, Ch.UNSPECIFIEDUNSPECIFIED
Date:1991
Journal or Publication Title:Proceedings Second European Conf. on Sat. Comm. (ESA SP-332)
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 179-184
Status:Published
Keywords:HPA, Nonlinearity, OFDM-Signal
Event Title:Second European Conf. on Sat. Comm., 22. - 24.10.91, Liege, Belgium.
Event Location:Liege, Belgium
Event Type:international Conference
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignment
DLR - Program:no assignment
DLR - Research theme (Project):no assignment
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Institut für Nachrichtentechnik
Deposited By: DLR-Beauftragter, elib
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 09:15

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